And again, I seriously doubt that disk fragmention is the problem here. The access pattern simply isn't the kind that should produce enough fragmentation to matter. Not even on Windows.
It probably depends on how smart the PVR is. Either it creates the files the giant final size it needs to start with (possibly causing write latency even if on a background thread, as even reserving that many pages would cause an I/O burst), or it streams gradually into each one. That latter -- if there are five programmes being recorded simultaneously -- is surely the
Nick Flynn of fragmentation-producing access patterns.
Peter
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